John Haller has a great tool so that you can jump from computer to computer and still have your Firefox browser with bookmarks, extensions and everything.
"Portable Firefox is a fully functional package of the Mozilla Firefox web browser optimized for use on a USB key drive. It has some specially-selected optimizations to make it perform faster and extend the life of your USB key as well as a specialized launcher that will allow most of your favorite extensions to work as you switch computers. "
This would be great for me because I often jump between 3 different computers. Unfortunately in this circumstance, they are all Macs. Portable Firefox is Windows-only for now.
This was an official collaboration project with Mozilla Development.
If anyone else gives this a try, please let me know how it works for you.